Ventilating-fan attachment



G. C. POLK VENTILATING FAN ATTACHMENT July 27, 1926,

2- Sheets-Sheet 1 Filed July 15, 1922 I' [I I July 27 1926. v T G. C. POLK VENTILATING FAN ATTACHMENT Filed July 15. 1922 2 Sheets-Sheet 2 \T z 0/ lzgm4yha MM Z %,4M 9 v I 9 MMM Patented July 27, 1926.

UNITED STATES 1,593,951 PATENT OFFICE.

GILBERT C. POLK, OF DETROIT, MICHIGAN, ASSIGNOR TO AMERICAN BLOWER COM- PANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

VENTILATING-FAN ATTACHMENT.

Application filed m 13, 1922. Serial 1:... 574,833.

This invention relates to an improved ventilating fan attachment particularly adapted for windows and the like.

The object of the invention is to provide 5 an improved ventilating fan attachment of simple, inexpensive construction, that w11l bestrong and durable in use and afl'ord a firm support for the fan, and that can be quickly and easily installed by the un- 1 skilled without alteration of the window or building construction. 1

A further object of, the invention is to provide an improved attaching means of the character referred to adapted to be com- 1 pactly mounted in the window frame at the upper part thereof without interference with the operation of the upper sash, permitting the upper sash to be closed and locked when the fan' is not in operation.

The invention, with other objects and advantages thereof, and the articular construction, combinations, an arrangements of parts comprising the same will be understood from the-hereinafter contained dev tailed, description, when considered in connection with the accompanying drawings,

forming part hereof and lustrating one embodiment of the invention.

In the drawings I Figure 1 is a front elevation of a ventilating-fan attachment constructed in accordance with the present invention. j

Figure 2 is a transverse section.

Fig. 3 is a front elevation of the device 85 applied to a window, and

Fig. 4 is 'a section on Figure p The invention comprehends improved ventilating fan attaching means comprising a 40 panel and a fan and motor unit carried by the panel, the panel with the fan being adapted to 'be secured to a window frame at the upper partthereof independently of both of the window sashes above the .lower sash and inwardly of the'u'pper sash.

More particularly the invention contemplates a panel made up of a plurality of slidably related sheet metal sections and adapted to be adjusted to fit difierent sized 9 windows.

Important novel characteristics of the invention resides in the special panel constructhe line 4-4 of tion, the particular reinforcing and stiifen-.

ing means therefor, the arrangement of the .fan and motor unit relatively to the panel,

the particular location of the panel in the window frame, and in combination therewith the provision of handles on the side rails of the upper sash member intermediate the top and bottom thereof and to the outer side of the lower sash for operating the upper sash. I

While a specific embodiment of the invention is illustrated in the drawings, I desire it to be understood that changes and variations in the'particular construction and arrangement of parts shown, and the embodiment of the invention in other forms, as will appeal to those skilled in the art and falling within the scope of the appended claims, may be practiced without departing from the spirit of the invention.

In the particular embodiment of the in vention illustrated in the drawings, the panel is shown made up of a main section 1, and adjustable end sections 2, 3,. the sections being constructed of sheet metal and arranged in sliding overlapping relation. The main section 1 at its top and bottom is provided with lateral right angle folds 4 and returned folds 5 extending in spaced relation with the first folds, said folded portions formin guides in which sl-idablyin terfit longitu inally and laterally extending folded portions or flanges 6 on the upper and 55 lower portions of the end sections 2, 3. The end sections 2, 3, at their outer ends are provided with lateral attaching flanges 7, 8, said flanges extending to the side of the panel opposite to that of the location of the folded portions 4, 5, 6, the attaching flanges having elongated screw or. bolt apertures 9.

The fan and motor unit is mounted on the main panel section 1. The fan and motor unit may be of any suitable construction, that shown being one of the well known types of disk or propeller fans which are adapted .to be reversed. 10 designates the fan wheel provided with a casing portion 10 and 11 the motor. The panel section 1 is provided with a circular opening 12v and the fan is arranged at said opening with the motor 11 extending to the inner side of the panel, and the casing portion 10 of the fan extending through the opening 12 in the 105 panel and rearwar 1y therefrom with its outer portion substantially flush with or terminating slightly short of the plane of the outer edges of the folded portions 4. accordance with the present invention, the fan .10

and motor unit is provided with an annular attaching plate 13 adapted to fit against the inner face of the panel about the opening 12 therein and be detachably secured thereto by bolts and nuts 15 and 16 as shown, or equivalent means, said bolts extending through suitable apertures in the panel andconnecting plate. The motor 11 is provided with radial arms 14 to which the casing portion 10 is secured, the attaching plate 13 being in turn suitably secured to said casing portion. The inner ends 2, 3, of the adjustable end panel sections adjoining the opening 12 in the main panel section are preferably curved, as shown, vto conform with the general curvature of the edge portion of the panel bounding the opening 12. 19 designates a conventional form of control switch for the fan mounted on the connecting plate 13, said switch providing for the reversal of the fan and having an operating cord or chain 20.

The main panel section 1 is provided at opposite sides of its opening 12 with transversely extending stiffening and reinforcing beads or corrugations 1.

As illustrated in Figures 3 and 4 of the drawings, the panel is adapted to be mounted in a window frame at the upper part thereof independently of the window sashes above the lower sash and inwardly of the upper sash, the attaching flanges 7, 8, fitting against the sides of the window frame inwardly of the groove of the lower sash, and being secured in place by screws 17 or like fastening means passing through the bolt apertures 9 of the attaching flanges and entering the sides of the frame. In the installation of the device the "end sections of the device 2, 3, are adjusted to fit against thetogether by hammering or the like, locking the sections in ad'usted position and making an air tight-an weat er proof joint between the parts. The fan and motor unit isthen secured to the panel by the bolts and nuts 15 and 16. In accordance with the teachings of the resent invention the upper s1 sh is provide with handles on its side rails, the handles being located intermediate the top and bottom of the sash just below the lower end of the panel when the upper sash is in closed position and disposed inwardly of the lower sash and preferably inwardly of the outer faces of the upper sash rails, said handles being arranged out of the way of the panel and lower sash and providing for the ready adjustment of the upper sash. In the present instance the handles are shown as comprising screw eye members 21 and handle members consisting of a rod part 22 with an eye 22 at one end thereof linked with the eye of the screw eye member 21 and having a loop or eye 22 at its outer end, the handles being adapted to be readily attached to the sash, and this construction providing for the pivotal connection of the handle members whereby they are adapted to be moved outward in use and normally occupy a position out of the way inwardly of the lower sash member.

By the special construction and arrangement of parts hereinbefore described, a simple, light, inexpensive construction is provided, that can be easily installed by the unskilled without alteration of the window or building construction. The structure is of a strong durable nature capable of affording the desired firm support for the fan and motor unit, the transverse beads or corrugations of the main panel reinforcing and stiffening the same at the sides of the opening for the fan, and the folded portions and flanges at the tops and bottoms of the panels, and at the ends of the adjustable end sections, in addition to their other functions,

serving as stiffening and strengthening means. The attachment is mounted on the window frame independently of the sash members and does not interfere with the adjustment of the upper sash permitting the same to be lowered, raised and locked in closed position, at the same time the fan is advantageously located at the upper part of the window frame to draw ofl' warm air from or blow in fresh air near the ceiling of the room, the fan attachment while adapted for general application for ventilating purposes being especially adapted for kitchens and the like.

What I claim is 1. The combination with a window having upper and lower sliding sashes, of a panel comprising a plurality of sheet metal sections arranged in overlapping relation, said sections having laterally extending folded portions at their upper and lower edges fitting one within the other, and said panel having lateral flanges at the end thereof, one of said sections being provided with an opening therein, a fan and motor unit mounted on said section at said openin and disposed inwardly of the outer edges 0 said folded portions of the section, said panel being secured in the window frame above the lower sash inwardly of the vertical plane of the upper sash with its folded portions facing t e upper sash and extending adjacent to the vertical plane of one side thereof providing for the closing of the upper sash when the fan is not in operation.

2. The combination with a window having upper and lower sliding sashes, the upper sash being provided with handles on. its side rails intermediate the upper and lower ends thereof at the inner sides thereof disposed entirely inwardly of the front faces of said rails, of a ventilating fan attachment comprising a panel and a fan carried by the panel, the panel being secured in the window frame to extend across the upper part thereof above the lower sash adjacent to but inwardly of the plane of the upper sash and with the fan disposed inwardly of the vertical plane of the upper sash providing for the closure of the upper sash whenthe fan is not in operation, and the lower edge of said panel extending above the handles of the upper sash when the latter is in its uppermost position.

3. The combination with a window having upper and lower sliding sashes, the upper sash being provided with handles on its side rails, said handles belng pivotally connected to the side mile at the inner sides thereof to occupy a position entirely inwardly of the front/faces of the side rails and adapted to be moved outwardly beyond the front faces of the side rails, of a ventilating fan attachment comprisinga panel and a fan carried by the panel, the panel being secured to the window frame to extend across the upper part thereof above the lower sash adjacent to the vertical plane of the upper sash but inwardly thereof and with the fan disposed inwardly of thevertical plane of the upper sash providing for the closure of the upper sash, and the lower edge of the panel extending above the handles of the upper sash when the latter is in its uppermost position.

In testimony whereof I hereunto aflix mysignature.

GILBERT C. POLK. 

